Patents by Inventor Kouichirou Maeda

Kouichirou Maeda has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 11038158
    Abstract: The present invention relates to a method for manufacturing a binder composition for a lithium-ion secondary battery electrode. The method comprises a step of dissolving a polymer having a melting point in a range of 50° C. to 150° C. in a monomer and obtaining a monomer solution in which the polymer is dissolved in the monomer; and a step of obtaining a composite polymer particle by subjecting the monomer solution to suspension polymerization or emulsion polymerization in an aqueous medium. The binder composition contains the composite polymer particle.
    Type: Grant
    Filed: July 3, 2019
    Date of Patent: June 15, 2021
    Assignee: ZEON CORPORATION
    Inventors: Azusa Masuda, Hiroki Oguro, Kouichirou Maeda
  • Publication number: 20210167389
    Abstract: Provided are a binder composition for an all-solid-state secondary battery with which it is possible to obtain an all-solid-state secondary battery that has good battery characteristics and for which processability during all-solid-state secondary battery production is excellent, a slurry composition for an all-solid-state secondary battery that contains this binder composition for an all-solid-state secondary battery, a functional layer for an all-solid-state secondary battery that is formed from this slurry composition for an all-solid-state secondary battery, and an all-solid-state secondary battery that includes this functional layer for an all-solid-state secondary battery. The binder composition for an all-solid-state secondary battery contains a polymer, an unsaturated acid metal salt monomer, and a solvent. The unsaturated acid metal salt monomer includes a divalent metal.
    Type: Application
    Filed: December 4, 2018
    Publication date: June 3, 2021
    Applicant: ZEON CORPORATION
    Inventor: Kouichirou MAEDA
  • Patent number: 10985401
    Abstract: Provided are a binder composition for a solid electrolyte battery and a slurry composition for a solid electrolyte battery that have excellent processability and can cause a solid electrolyte battery to display excellent battery characteristics. The binder composition contains a particulate polymer of a copolymer including an acrylate monomer unit and an aromatic monomer unit, alkyl-modified cellulose represented by formula (I), and an organic solvent. In formula (I), R1, R2, and R3 each indicate a hydrogen atom or an alkyl group having a carbon number of at least 1 and not more than 4. At least two of R1, R2, and R3 are alkyl groups having a carbon number of at least 2 and not more than 4 in 50 mol % or more of all repeating units. Also, n indicates a natural number.
    Type: Grant
    Filed: June 6, 2017
    Date of Patent: April 20, 2021
    Assignee: ZEON CORPORATION
    Inventor: Kouichirou Maeda
  • Patent number: 10862128
    Abstract: Provided is a binder composition for a solid electrolyte battery having excellent processability in solid electrolyte battery production and with which a solid electrolyte battery having excellent battery performance can be obtained. The binder composition for a solid electrolyte battery contains a particulate polymer having a core-shell structure and an organic solvent. A mass ratio of content of a polymer forming a core portion of the particulate polymer relative to content of a polymer forming a shell portion of the particulate polymer (i.e., a ratio of “polymer forming core portion/polymer forming shell portion”) is 1/0.3 to 1/5.
    Type: Grant
    Filed: July 5, 2017
    Date of Patent: December 8, 2020
    Assignee: ZEON CORPORATION
    Inventors: Kouichirou Maeda, Hiroki Oguro
  • Publication number: 20200331234
    Abstract: Provided is a laminate for a non-aqueous secondary battery that, in transfer of a functional layer onto a substrate for a non-aqueous secondary battery, enables easy peeling of the functional layer from a releasable substrate while also enabling good adhesion of the functional layer to the substrate for a non-aqueous secondary battery. The laminate for a non-aqueous secondary battery includes a releasable substrate and a functional layer containing a binder. The functional layer is formed in a dotted form on a surface A at one side of the releasable substrate.
    Type: Application
    Filed: August 14, 2018
    Publication date: October 22, 2020
    Applicant: ZEON CORPORATION
    Inventors: Yasuhiro WAKIZAKA, Masanobu SATO, Hiroshi KOGA, Kouichirou MAEDA
  • Patent number: 10800955
    Abstract: Disclosed is an aqueous sealant composition for a nonaqueous electrolyte battery by which a sealant layer having excellent properties can be obtained. An aqueous sealant composition of the present disclosure comprises an acrylic polymer obtained by polymerizing a monomer composition comprising a compound represented by a general formula (I): CH2?CR1COOR2??(I), where R1 represents —H or —CH3, and R2 represents a cycloalkyl group or an alkyl group having 8 or more carbon atoms, in an amount of 80 mass % or more in an aqueous solvent.
    Type: Grant
    Filed: April 14, 2017
    Date of Patent: October 13, 2020
    Assignee: ZEON CORPORATION
    Inventor: Kouichirou Maeda
  • Patent number: 10797343
    Abstract: This binder for all-solid-state secondary batteries contains a binder polymer which is obtained by polymerizing or copolymerizing a monomer composition that contains a polyalkylene oxide-based monomer.
    Type: Grant
    Filed: August 31, 2016
    Date of Patent: October 6, 2020
    Assignee: ZEON CORPORATION
    Inventor: Kouichirou Maeda
  • Patent number: 10797304
    Abstract: An all-solid-state secondary battery includes a positive electrode having a positive electrode active material layer, a negative electrode having a negative electrode active material layer, and a solid electrolyte layer between the positive and negative electrode active material layers. The solid electrolyte layer has a thickness of 2 to 20 ?m. The solid electrolyte layer includes a binder containing a particulate polymer having an average particle diameter of 0.1 to 1 ?m.
    Type: Grant
    Filed: February 3, 2016
    Date of Patent: October 6, 2020
    Assignee: ZEON CORPORATION
    Inventor: Kouichirou Maeda
  • Patent number: 10749153
    Abstract: Provided is a sealant for an electrochemical device in which a non-aqueous electrolysis solution is used that has sufficient sealing performance even with respect to a high-polarity resin. The sealant contains a conjugated diene polymer (A), an aromatic vinyl-conjugated diene block polymer (B), and a hydrogenated amine-modified aromatic vinyl-conjugated diene block polymer (C).
    Type: Grant
    Filed: January 6, 2017
    Date of Patent: August 18, 2020
    Assignee: ZEON CORPORATION
    Inventor: Kouichirou Maeda
  • Patent number: 10723867
    Abstract: An aqueous dispersion which contains a conjugated diene polymer as the main component is contained at a solid content weight of 70 to 97 wt %.
    Type: Grant
    Filed: June 13, 2016
    Date of Patent: July 28, 2020
    Assignee: ZEON CORPORATION
    Inventor: Kouichirou Maeda
  • Patent number: 10651447
    Abstract: Provided is a heat-sensitive layer for a lithium ion secondary battery that can efficiently block rising temperature during abnormal heating by increasing battery internal resistance and thereby reducing current. The heat-sensitive layer for a lithium ion secondary battery is formed from a heat-sensitive layer composition containing particles in each of which a second component is substantially partially disposed at the outside of a particle formed from a first component. The heat-sensitive layer composition has a storage modulus at 60° C. of 10 kPa or more and a storage modulus at 150° C. of 1 kPa or less.
    Type: Grant
    Filed: December 13, 2016
    Date of Patent: May 12, 2020
    Assignee: ZEON CORPORATION
    Inventors: Hiroki Oguro, Kouichirou Maeda, Naoki Takahashi
  • Patent number: 10622633
    Abstract: The present invention includes: a copolymer including alkylene structure units and nitrile-group-containing monomer units; and a carbonate compound and/or an ester compound having a boiling point of 100° C. or higher and a molecular weight of 550 or less.
    Type: Grant
    Filed: August 31, 2016
    Date of Patent: April 14, 2020
    Assignee: ZEON CORPORATION
    Inventors: Hiroki Oguro, Kouichirou Maeda
  • Patent number: 10593949
    Abstract: It is an object of the present disclosure to provide an electrode for lithium ion secondary battery-use that can efficiently prevent a temperature increase by reducing current through an increase in the battery internal resistance during abnormal overheating. The electrode for lithium ion secondary battery-use of the present disclosure comprises a binder composition containing particles formed by a second component being located substantially on a portion of the outside of particles comprising a first component. The initial adhesive force of the binder composition is at least 1. The storage elastic modulus of the binder composition at 150° C. is no greater than 1,000 Pa.
    Type: Grant
    Filed: November 9, 2016
    Date of Patent: March 17, 2020
    Assignee: Zeon Corporation
    Inventors: Hiroki Oguro, Kouichirou Maeda, Naoki Takahashi
  • Patent number: 10530012
    Abstract: The double-sided tape for fixing an electrode constituent body is used in an electrochemical device that houses in a pouch-type outer casing an electrode constituent body wherein a positive electrode member, a separator member and a negative electrode member are layered or wound. The double-sided tape comprises a surface having a pressure-sensitive adhesive for adhering to the electrode constituent body, and a surface having a heat-sensitive adhesive for adhering to the pouch-type outer casing.
    Type: Grant
    Filed: October 23, 2015
    Date of Patent: January 7, 2020
    Assignee: ZEON CORPORATION
    Inventors: Kouichirou Maeda, Taku Matsumura, Kunihito Arai
  • Publication number: 20190334159
    Abstract: The present invention relates to a method for manufacturing a binder composition for a lithium-ion secondary battery electrode. The method comprises a step of dissolving a polymer having a melting point in a range of 50° C. to 150° C. in a monomer and obtaining a monomer solution in which the polymer is dissolved in the monomer; and a step of obtaining a composite polymer particle by subjecting the monomer solution to suspension polymerization or emulsion polymerization in an aqueous medium. The binder composition contains the composite polymer particle.
    Type: Application
    Filed: July 3, 2019
    Publication date: October 31, 2019
    Applicant: ZEON CORPORATION
    Inventors: Azusa MASUDA, Hiroki OGURO, Kouichirou MAEDA
  • Publication number: 20190312278
    Abstract: Provided is a binder composition for a solid electrolyte battery having excellent processability in solid electrolyte battery production and with which a solid electrolyte battery having excellent battery performance can be obtained. The binder composition for a solid electrolyte battery contains a particulate polymer having a core-shell structure and an organic solvent. A mass ratio of content of a polymer forming a core portion of the particulate polymer relative to content of a polymer forming a shell portion of the particulate polymer (i.e., a ratio of “polymer forming core portion/polymer forming shell portion”) is 1/0.3 to 1/5.
    Type: Application
    Filed: July 5, 2017
    Publication date: October 10, 2019
    Applicant: Zeon Corporation
    Inventors: Kouichirou MAEDA, Hiroki OGURO
  • Publication number: 20190276716
    Abstract: Disclosed is an aqueous sealant composition for a nonaqueous electrolyte battery by which a sealant layer having excellent properties can be obtained. An aqueous sealant composition of the present disclosure comprises an acrylic polymer obtained by polymerizing a monomer composition comprising a compound represented by a general formula (I): CH2?CR1COOR2??(I), where R1 represents —H or —CH3, and R2 represents a cycloalkyl group or an alkyl group having 8 or more carbon atoms, in an amount of 80 mass % or more in an aqueous solvent.
    Type: Application
    Filed: April 14, 2017
    Publication date: September 12, 2019
    Applicant: ZEON CORPORATION
    Inventor: Kouichirou MAEDA
  • Publication number: 20190229339
    Abstract: Provided is a binder composition for an all-solid-state battery with which an all-solid-state battery having excellent capacity characteristics can be obtained. The binder composition contains: a copolymer including an alkylene structural unit and a nitrile group-containing monomer unit; and an organic solvent having a boiling point of 100° C. or higher. The copolymer includes the nitrile group-containing monomer unit with a percentage content of at least 10 mass % and not more than 30 mass % and has an iodine value of at least 40 mg/100 mg and not more than 130 mg/100 mg.
    Type: Application
    Filed: September 5, 2017
    Publication date: July 25, 2019
    Applicant: ZEON CORPORATION
    Inventors: Kouichirou MAEDA, Hiroki OGURO
  • Publication number: 20190214673
    Abstract: Provided are a binder composition for a solid electrolyte battery and a slurry composition for a solid electrolyte battery that have excellent processability and can cause a solid electrolyte battery to display excellent battery characteristics. The binder composition contains a particulate polymer of a copolymer including an acrylate monomer unit and an aromatic monomer unit, alkyl-modified cellulose represented by formula (I), and an organic solvent. In formula (I), R1, R2, and R3 each indicate a hydrogen atom or an alkyl group having a carbon number of at least 1 and not more than 4. At least two of R1, R2, and R3 are alkyl groups having a carbon number of at least 2 and not more than 4 in 50 mol % or more of all repeating units. Also, n indicates a natural number.
    Type: Application
    Filed: June 6, 2017
    Publication date: July 11, 2019
    Applicant: ZEON CORPORATION
    Inventor: Kouichirou MAEDA
  • Publication number: 20190165350
    Abstract: Provided is a heat-sensitive layer for a lithium ion secondary battery that can efficiently block rising temperature during abnormal heating by increasing battery internal resistance and thereby reducing current. The heat-sensitive layer for a lithium ion secondary battery is formed from a heat-sensitive layer composition containing particles in each of which a second component is substantially partially disposed at the outside of a particle formed from a first component. The heat-sensitive layer composition has a storage modulus at 60° C. of 10 kPa or more and a storage modulus at 150° C. of 1 kPa or less.
    Type: Application
    Filed: December 13, 2016
    Publication date: May 30, 2019
    Applicant: ZEON CORPORATION
    Inventors: Hiroki OGURO, Kouichirou MAEDA, Naoki TAKAHASHI